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lpm: fix big endian support

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This module uses type conversion between struct and int.
Also truncation and comparison is used with this int.
It is not safe for different endian arch.

Add ifdef for big endian struct to fix this issue.

Signed-off-by: Xuelin Shi <xuelin.shi@freescale.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This commit is contained in:
Xuelin Shi 2015-03-24 13:58:20 +08:00 committed by Thomas Monjalon
parent 6db141c91e
commit afc5c914a0
1 changed files with 20 additions and 0 deletions
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20
lib/librte_lpm/rte_lpm.h
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@ -44,6 +44,7 @@
#include <stdint.h>
#include <stdlib.h>
#include <rte_branch_prediction.h>
#include <rte_byteorder.h>
#include <rte_memory.h>
#include <rte_common.h>
#include <rte_vect.h>
@ -96,6 +97,7 @@ extern "C" {
/** Bitmask used to indicate successful lookup */
#define RTE_LPM_LOOKUP_SUCCESS 0x0100
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
/** @internal Tbl24 entry structure. */
struct rte_lpm_tbl24_entry {
/* Stores Next hop or group index (i.e. gindex)into tbl8. */
@ -117,6 +119,24 @@ struct rte_lpm_tbl8_entry {
uint8_t valid_group :1; /**< Group validation flag. */
uint8_t depth :6; /**< Rule depth. */
};
#else
struct rte_lpm_tbl24_entry {
uint8_t depth :6;
uint8_t ext_entry :1;
uint8_t valid :1;
union {
uint8_t tbl8_gindex;
uint8_t next_hop;
};
};
struct rte_lpm_tbl8_entry {
uint8_t depth :6;
uint8_t valid_group :1;
uint8_t valid :1;
uint8_t next_hop;
};
#endif
/** @internal Rule structure. */
struct rte_lpm_rule {